November 2025 - Secure Trust Bank Commercial Finance (STB CF), the asset-based lending arm of Secure Trust Bank, has provided a £20m facility to Sigma Advanced Systems UK Ltd ("Sigma") to support its acquisition of Coventry-headquartered Nasmyth Group. The move significantly strengthens Sigma's manufacturing and precision-engineering capabilities across the aerospace and defence sectors.
Founded in 1994, Sigma Advanced Systems Ltd (the parent company) is a leading global manufacturer and service provider of advanced defence systems and security solutions. Its expertise spans avionics, naval systems, communications, submarine platforms, radars and counter-unmanned aerial systems.
The acquisition of Nasmyth, a leading provider of specialist precision-engineering services to the aerospace, defence and related industries, adds complementary technical expertise and cutting-edge technology to the group. Sigma's track record in design, development and manufacturing provides valuable strategic insight and financial strength to support Nasmyth's future growth.
The £20m from STB CF combines invoice discounting with a working-capital facility, giving Sigma the headroom needed to integrate Nasmyth's operations efficiently. It will also help the group to pursue further vertical integration in the UK and internationally as part of its long-term strategy.
Pramod Raju, Director at Sigma Advanced Systems UK Ltd, said: "This acquisition marks an important milestone for both Nasmyth and Sigma. By combining both of our expertise, we can strengthen our position in the global aerospace market. To support this, we needed a long-term funding partner that understood our strategic ambitions. Tony and the team took the time to understand our unique needs and acted quickly and decisively to put the facility in place.
"The funding gives us the stability and capital needed to support both organic growth and acquisitive expansion. Bringing Nasmyth into the group enhances our manufacturing capabilities and positions us to deliver higher-value engineering solutions to customers worldwide."
Tony Young, Regional Sales Director at Secure Trust Bank Commercial Finance, said: "Backing Sigma in its strategic acquisition of Nasmyth reflects our commitment to supporting ambitious businesses across the UK mid-market on their growth journeys. The facility gives Sigma the flexibility and headroom needed to integrate Nasmyth into the group while continuing to expand its global footprint. We look forward to seeing Sigma's continued growth and to the opportunity to work with the team again as they pursue further vertical acquisitions."